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A phase diagram is a graphical representation of a substance's physical states under various temperature and pressure conditions. Pressure is on the y-axis of a typical phase diagram, and temperature is on the x-axis. A phase change occurs when we cross the lines or curves on the phase diagram.
We can use the phase diagram to identify the state where water exists under specific temperature and pressure conditions. For example, water is ice at 50 kPa and – 10 o C. Water is unique compared to other substances.
8 Αυγ 2022 · The critical pressure \(\left( P_\text{C} \right)\) is the pressure that must be applied to the gas at the critical temperature in order to turn it into a liquid. For water, the critical pressure is very high, \(217.75 \: \text{atm}\). The critical point is the intersection point of the critical temperature and the critical pressure.
The simplest phase diagrams are pressure–temperature diagrams of a single simple substance, such as water. The axes correspond to the pressure and temperature. The phase diagram shows, in pressure–temperature space, the lines of equilibrium or phase boundaries between the three phases of solid, liquid, and gas.
12 Ιουλ 2023 · To understand the basics of a one-component phase diagram as a function of temperature and pressure in a closed system. To be able to identify the triple point, the critical point, and four regions: solid, liquid, gas, and a supercritical fluid.
1 Ιαν 1999 · Phase Behavior on a Pressure-Volume Diagram; Single-Component P-V and T-V Diagrams
30 Ιαν 2023 · Phase diagram is a graphical representation of the physical states of a substance under different conditions of temperature and pressure. A typical phase diagram has pressure on the y-axis and temperature on the x-axis. As we cross the lines or curves on the phase diagram, a phase change occurs.
